US Bridges

Madison Ave over Mosquito Creek

Fair

Pottawattamie County, Iowa · Madison Ave over Mosquito · Structure no. 000000000002695

Built
1968
57 years old, rebuilt 1999
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
178 ft
3 main spans
Daily traffic
5,557
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Madison Ave over Mosquito Creek is a steel continuous stringer/multi-beam or girder carrying Madison Ave over Mosquito Creek in Pottawattamie County, Iowa. It was built in 1968 and reconstructed in 1999, so it is 57 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,557 vehicles a day, projected to reach 5,557 by 2044. The structure is 178 ft (54.3 m) long and 77 ft wide.

Location

Open in Google Maps
CarriesMadison Ave
CrossesMosquito Creek
LocationMadison Ave over Mosquito
RouteCity Street 0
CountyPottawattamie County
StateIowa
Coordinates41.24223, -95.81839
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.1 US tons
Inventory rating39.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length178 ft (54.3 m)
Longest span68 ft (20.7 m)
Deck width77 ft (23.5 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,557 (2022)
Projected traffic5,557 by 2044
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Madison Ave over Mosquito Creek built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1999.

What condition is Madison Ave over Mosquito Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does Madison Ave over Mosquito Creek carry?

About 5,557 vehicles per day (2022 count).

How long is Madison Ave over Mosquito Creek?

The structure is 178 ft (54.3 m) long with a longest span of 68 ft (20.7 m) and a deck 77 ft wide.

Who owns Madison Ave over Mosquito Creek?

It is owned by the City or Municipal Highway Agency.